31328804 has 12 divisors (see below), whose sum is σ = 59042844. Its totient is φ = 14459424.

The previous prime is 31328779. The next prime is 31328809. The reversal of 31328804 is 40882313.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2190400 + 29138404 = 1480^2 + 5398^2 .

It is not an unprimeable number, because it can be changed into a prime (31328809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301187 + ... + 301290.

It is an arithmetic number, because the mean of its divisors is an integer number (4920237).

Almost surely, 2^31328804 is an apocalyptic number.

It is an amenable number.

31328804 is a deficient number, since it is larger than the sum of its proper divisors (27714040).

31328804 is a wasteful number, since it uses less digits than its factorization.

31328804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602494 (or 602492 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 31328804 is about 5597.2139498147. The cubic root of 31328804 is about 315.2448050791.

The spelling of 31328804 in words is "thirty-one million, three hundred twenty-eight thousand, eight hundred four".